<!--
@license
Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
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-->
<script>
  var p = Object.create(HTMLElement.prototype);
  p.createdCallback = function() {
    console.warn(this.localName, 'created');
  }
  p.attachedCallback = function() {
    this.report();
  }
  p.report = function() {
    console.group(this.localName, 'report');
    console.log('offsetParent is', this.offsetParent);
    console.log('parentNode', this.parentNode, 'has position', 
      window.getComputedStyle(this.parentNode).position);
    console.groupEnd(this.localName);
  }
  document.registerElement('some-thing', {prototype: p});
</script>